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Beginner protip 1 hour 111 825.
Hc sr04 arduino beispiel. In this project the ultrasonic sensor reads and writes the distance to an object in the serial monitor. Library for hc sr04 ultrasonic distance sensor. When a case statement is found whose value matches that of the variable the code in that case statement is run.
It can be an ultrasonic range sensor or any purposes. Things used in this project. Repository contents firmware arduino example code.
1 arduino uno r3. We would like to show you a description here but the site won t allow us. For example if the object is 20 cm away from the sensor and the speed of the sound is 340 m s or 0 034 cm µs the sound wave will need to travel about 588 microseconds.
In particular a switch statement compares the value of a variable to the values specified in case statements. But what you will get from the echo pin will be double that number because the sound wave needs to travel forward and bounce backward so in order to get the distance in cm we need to multiply the received travel time value. Library for hc sr04 ultrasonic distance sensor.
Simple arduino and hc sr04 example. Follow the circuit diagram and make the connections as shown in the image given below. You will learn how to interface ultrasonic sensor hc sr04 with arduino.
Open the arduino ide software on your computer. Ardublog mi blog en español sobre arduino ardublog libreria para arduino del modulo ultrasonic ranging hc sr04. Ultrasonic sensor hc sr04 with arduino tutorial.
This code is licensed under creative commons share alike and attribution by j rodrigo. Ultrasonic sensor hc sr04 ultrasonic sensor hc sr04 sen 15569 this is the hc sr04 ultrasonic ranging sensor. Open a new sketch file by clicking new.
After spending far too long on this than i felt i needed to i decided to ma. This sensor is very popular among the arduino tinkerers. So here we provide an example on how to use the hc sr04 ultrasonic sensor with the arduino.
After buying a hc sr04 from amazon i could not get it to work out of the box. Make sure to check the pin definitions and. This economical sensor provides 2cm to 400cm of non contact measurement functionality with a ranging accuracy that can reach up to 3mm.
Not wanting to concede i had a doa sensor on my hands i searched for a simple example setup. How to plug the ultrasonic hc sr04 into the arduino using the example plugandplay. 1 ultrasonic sensor hc sr04 procedure.
Source : pinterest.com